Many philosophers present one public face to the world, but behave very differently "in private"

The title of this post should make any moderately sophisticated person laugh (of course they do that!), but many academic philosophers are so psychologically naive that it may be necessary to emphasize the point.

Here's what has made the problem vivid to me. Over the last few months, I've had multiple readers report to me that:

1. A prominent--on social media--opponent of sexual harassment, who has called for informal social sanctions of suspected sexual harassers, was in fact found guilty of sexual harassment by his university.

2. A prominent--on social media--champion of women and minorities in academic philosophy has been called out as an egregious narcissistic and demeaning bully of one of his female graduate students.

3. A prominent--on social media--champion of all kinds of diversity, demographic and philosophical, in the profession, has been called out as a nasty bully of his colleagues, especially junior ones.

4. A prominent--on social media--opponent of faculty having sex with graduate students in their department, has been having sex with a graduate student in another department at his university.

Maybe these allegations are all false (I'm not sure how serious the last one is, even if true), and I do not plan to name the individuals allegedly involved, because their (alleged) hypocrisy is not the issue. The issue is that cyberspace has created an alternative reality in which some sexist, self-serving and sanctimonious malefactors create a deceptive (and positive) professional identity that bears little or no relationship to how they treat actual human beings in real life. But at some point reality tends to leak into cyberspace too.